of Edinburgh, Session 1881 - 82 . 
803 
Kesults of Trials. 
Date. 
Thermometer. 
Pressure 
of 
Atmosphere. 
Spark-length 
in 
Millimetres. 
State of the 
Air. 
Mean of 
Differences 
of Potential. 
Percentage 
Ratio of 
Increment to 
Reading for 
Undried. 
Dry. 
| Wet. 
May 12. 
161 
12 
6 
Undried. 
367 ) 
17 
6 
Dried. 
429 ( ) 
Q . A 
>> 
... 
... 
... 
6 
Undried. 
415 \ 
6 4 
May 15. 
16 
11-8 
755 mm. 
6 
Undried. 
400 ) 
Q . K 
3 3 
... 
... 
... 
6 
Dried. 
434 j 
O D 
May 18. 
16-8 
13 
755-4 
3 - 
Undried. 
180 ) 
1 ‘4 
99 
... 
... 
... 
3 
Dried. 
188 f 
> 3 
18 
14 
3 
Undried. 
191 ) 
A *9 
3 5 
3 
Dried. 
199 \ 
*± £ 
18-2 
14-2 
5 
Dried. 
314 ) 
Q .1 
3 5 
... 
... 
... 
5 
Undried. 
305 f 
O 1 
May 19. 
177 
13-9 
755-6 
2 
Undried. 
140 l 
k -A 
33 
... 
... 
... 
2 
Dried. 
147 \ 
9 U 
4 
Dried. 
242 l 
1 1 
3 5 
... . 
... 
4 
Undried. . 
218 i 
1 1 
3 3 
18-8 
15 
6 
Undried. 
365 ) 
3 3 
... 
6 
Dried. 
358 [• 
0 
3 3 
... 
... 
... 
6 
Undried. 
353 ) 
May 24. 
17-8 
14-6 
755-4 
6 
Undried. 
348 } 
1 A 
99 
... 
... 
6 
Dried. 
406 ( 
ID 
May 25. 
19 
15-8 
755-9 
1 
Undried. 
89 | 
k-A 
33 
... 
... 
... 
1 
Dried. 
94 i 
9 U 
9 3 
2 
Dried. 
151 l 
1 *4 
3 3 
... 
... 
2 
Undried. 
149 | 
) 3 
3 
Undried. 
210 ) 
n 
3 3 
... 
... 
3 
Dried. 
210 ( 
33 
4 
Dried. 
254 ) 
- 3-1 
3 3 
... 
... 
... 
4 
Undried. 
262 { 
May 26. 
19 
15-6 
755 7 
4 
Undried. ' 
245 ) 
Q-O 
3 3 
... 
... 
4 
Dried. 
265 ( l 
O .O 
3 3 
20-4 
167 
... 
4 
Undried. 
255 \ 
o y 
